Drop-feeding device for glass-machines



A. L. SCHRAM.

DROP FEEDING DEVICE FOR GLASS MACHINES. AEPLICATIUN FILED AUG.28, 1915.

1,353,276., PatentedSeP 21,199 400 5 SHEETS-SHEET l- A .L. SCHRAM. DROP FEEDING DEVICE FOR GLASS MACHI ES.

APPLICATION FILED AUG-.S, I915- Patented Sept. 21, 1920.

5 SHEETS-SHEET 2.

M fix I A. L. SCHRAM.

DROP FEEDING DEVICE FOR GLASS MACHINES. APPUCATION FILED AUG.28. I915.

1,353,276, Patented Sept. 21,1920.

5 SHEETSSHEET 3.

A. L. SCHRAM.

DROP FEEDING DEVICE FOR GLASS MACHINES.

APPLICATION FILED AUG-28, 1915.

///%ZHHi%/IMEM $10141 mm A. L. SCHRAM.

DROP FEEDING DEVICE FOR GLASS MACHINES.

' APPLICATION FILED AUG.2B, I915. 1,353,276.

Patented Sept. 21,1920.

5 SHEETSSHEET 5 2 m mr Z H z M .a l W J UNIT ALEXANDER L. SCI-IRAM; OE HILLSBORO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN- MENTS, T0 DREY AUTOMATIC GLASS MACHINE COMPANY, OF ST. LOUIS, MIS- SOURI, A CORPORATION OF MISSOURI.

DROP-FEEDING DEVICE FOR GLASS-MACHINES.

Specification of Letters Patent.

Application filed August 28, 1915. Serial No. 47,719.

i Y '0 all whom it may concern.

Be it known that I, ALEXANDER L. SCREAM, a citizen of the United States, and resident of Hillsboro, hfontgomery county, Illinois, have invented certain new and useful Improvements in Drop-Feeding Devices for Glass-Machines, of which the following is a specification containin a full, clear, and exact description, reference being had to the accompanying drawings, forming a. part hereof.

My invention relates to improvements in drop feeding devices for glass machines, wherein partible cup elements and a cutting element conjunctively operate, with a chamber beneath a discharge orifice, to 001- lect and support a batch of glass, flowing from the discharge orifice, in the chamber and free from the sides thereof, release the collected batch and then sever it from the stream flowing from the orifice.

The object of my improvements is to construct a means for collecting a batch of glass from a stream flowing from the discharge orifice of a furnace and supporting the batch in a heated chamber with its major body portion free from contact with the chamber and a knife for severing the batch from the stream by .a clean shear cut whereby to minimize contact with the batch by the gathering means and to obviate irregularities of the batch at its points of cutting or severing from the stream to the end that ware or articles are produced clear and free from cheeks-or markings. 1

My'invention consists in the arrangement and combination of parts hereinafter fully described, pointed out in my claims and illustrated by the accompanying drawings in whichi Figure 1 shows in vertical section a portion of a glass furnace and its extension for discharging glass and a portion'of a glass forming machine;

elevation of the glass dischargingextension of the furnace showing my improved glass gathering and cutting mechamsm;

' by a gravity weight to" hold Fig. 2 is an enlarged fragmental, sectional Fig. 5 is a longitudinal, sectional eleva-' tion, ona reduced scale, of the gathering and cutting elements at the moment of cutting, showing the attenuated stream end caught in the cup and the tail of the batch being guided as to a mold; f

Fig. 6 is a view similar to Fig. 5, with the parts of the apparatus in the same position but slrowing the batch fully gathered;

Fig. 7 is a view siinilar to Figs. 5 and 6, but. showing the partible cup and knife in an open position and the batch being dropped therefrom to a mold;

Fig. 8 is an enlarged fragmental longitudinal sectional elevation showing the discharge orifice, its controlling plug and my improved gathering cups and knife; and

Fig. 9 is a modified form of knife construction wherein the knife its cutting edge against its companion edge. I

Referring by numerals to the accompany ing drawings,

l0 designates the glass furnace, only of which is shown, and which is provided in its side .wall with an opening 11 having at its bottom and below the glass level of the furnace a base 12 of refractory. material and having a lining 13 of refractory material. The base 12 extendsdaterally beyond the wall of the furnace, and has rested thereagainst a furnace extension 14 constructed of refractory 'material and through which near its outer end is a discharge opening 15, lined by a removable a portion bushing 16, through which the molten glass proper is tilted Patented Sept. 211, 1926.

upon a n allic harness 17 and which has an opening: 18 of greater diameter than and in registration with the bushing 16.

Secured to the underneath face of the harness l? is a head 19, having an opening 20 therethroiiigh, and in order that the head to retain a hatch of glass in the event the glass reaches the ring as might happen when the cups and knife are momentarily stopped by accident. This ring also constitutes a support for the. bushing 16 and forms with the. bushing and the head 19 a chamber heated. by conduction from the furnace extension in which batches of glass are gathcred and through which the molten glass either in the stream flowing from the hushing or in batch form passes Without contacting with the sides of said chamber.

On the underneath face of the head I secure the plates in parallel arrangement,

one on each side of the opening-in the head and which form a trackway for the partihle cup elements 26 and :47, each of which ccn-- sists of a substantially rectangular metal block having in their forward faces concavities 28 which taper inwardly and down.- wardly and conjointly form a cup to receive and partially hold a gathering of l ly preference there is formed in each of the cup elements adjacent the concavities a cavity forming a means to receive Water for the ccoiing of the cup elements. To the cup element 526 there is secured a plate 30 and. to the cup element 27 there is secured a plate 30, which plates form the bottoms of the ater cavities and which plates have their adjacent margins shaped to conform with the adjacent or concaved faces of the cup elements. Said plates extend outwardly beyond the cup elements for connection with cup o icrating .means hereinafter described. paralleling hut in planes beneath the plates are the trackway's 21 between which mounted the 7 2 32 which is Water cooled similarly to the cup elements and provided with an extended plate 33 for its operation. The uppermost forward edge of this knife cotiperates with the lowermost inner edge of the cup element 27 to sever the hatch of from the stream.

Susnended from the metallic her; of tl-e tiirnace extension by the pivot hells 34-. are ocking levers 35 and 35*. the lever 3.35 hawngr its one end connected with the plate 30 of the cup element 26 and with the plate 33 of the knife 32, and the lever 35* having its one end connected with the plate 30' of the cup element 27. 'lhe other end of the lever 35 is connected with a floating cylinder 36 and the same end of the lever 35 is connected with the stem 37 of a piston operating with the cylinder.

The numeral 38 designates a plate adjustahly secured to the harness 17 by Ineansof slots and bolts 88 and depending from the plate is a pin 40 fromwhich I pivctally suspend a lever 41, having arms of unequal lengths. To each of the arms of the lever 41' there is connected a link 42, which serves to connect the long arm of the lever 41 with the lever 35* and the shortarm of the lever 41 with the lever 35". Leading from each end of the cylinder is a flexible tube 4'13 which. connects with a valve 44: in communication by means of a tuhe 45 with a source of compressed air. not shown.

This valve 4.4 includes a. movable part (stem) 46 which alternately operates to supply compressed air to one end of the cylinder and exhaust the other and then supply air to the cylinder end just exhausted and exhaust at the cylinder end first siipplied with air.

The v'alve'shown in its specific construc-' Connected with this plunger is an arm 50 carrying at its outer end a Weighted pin 51 arrai'iged to the stem or working part of the air vale o? howl-h through the discharge oriice or hushi ll employ a plug; 52.

In Fig. 9 l illustrate a modified form of glass cutting means wherein the glass gathering cups-are constructed and operated identically as inthe other form shown and described. except that the cutting edge 53 of the one cup is beveled.

weight 55 at the outer end of the plate of the knife which connects with the pneumatically operated rocking lever.

The traclm'ay 54 of sl' 'htly greater luii ht than the ltnii'e Hilliilll some vertica: play of the knife and the weight serves For controlling the volume The knife is also constructed and operates, the same as in the other form shown and described except for the trackway, 54: in, which is moved and for the adjustable of vertical alinement with the 'Inold,'and' to provide for the conduction of this attenuated batch end into-the mold I employ on the cup element 27 having the cutting margin a downwardly and inwardly inclined guide and on the knife 32 a similar guide 56 between which guides the batch end is straightened out and caused to fall vertically into-the mold.

The plate 30 of the cup element 27 having the cutting edge and the plate 33 of the knife- 32 each have a transverse slot 57 which provide for arcual movements of the pins connecting the plates and their operating levers, while the plate 30 connected with the cup element 26, which cup element simply enters into the gathering and has nothing to do with the cutting of the glass, is provided with an opening the'rethrough whose dimensions permit of the arcual movement of the pin connecting it'witlr its operating lever as well aslongitudinal play between the said plate and the operating From the foregoing description it will be observed that in the gathering operation the cup 26 is first brought to a gathering position and during which operation the cup 27 and knife-32 will continue to move until the severing is completed. In discharging, knife 32 recedes at the same time as cup 27 and cup 26 follows when the end of the slot in plate 30 is reached.

Having thus described my invention, what I claim as new therein and desire to secure by Letters Patent of the United States therefor, is: v

1-. In an apparatus of the class described, a controllable discharging means for a glass furnace, a chamber 'surrounding and of greater cross sectional dimensions than the discharge end of said means, partible gathering devices forming a continuation of said chamber, a glass severing device forming the bottom of said chamber, a glass forming machine and means controlled by the forming machine for operating the gathering and severing devices.

2. In an apparatus of the class described, a glass furnace having a controllable dis charge orifice, partible, bottomless cup elements movably mounted beneath the discharge orifice, a glass severing device forniing the bottom of the cup compr slng said partible elements, pair ofirocking levers for the movement of said cup elements and severing device, a cylinder and piston for I rocking said levers, a valve controlled source, of fluid supply forsaid cylinder, a-

glass forming machine, means carried by one of the movable parts of the forming machine for operating said valve, and means for causing the said severing device to be moved a greater distance than the said cup'elernents.

3. In an apparatus of the class described, a controllable glass discharging means, means forming av chamber beneath the discharging means and of greater; diameter than. the orifice thereof, partible and bottomless gathering means beneath said discharging means, a knife forming a bottom for the" gathering means, and means for moving the partible gathering means and said knife different lengths of movement;

for the purposes stated. l

4. In combination with partible opp shaped gathering devices, one of which'is prov ided w ith a glass sex ering edge, a knife,

a support for the knife permitting vertical play thereof when moved and an adjustable weight acting on the knife to cause its cut ting edge to bear against the cutting edge of one of the gathering devices.

5. In an apparatus of the class described, relatively movable glass gatheringand severing devices, a pair of rocking levers for the operation of thesaid devices, a cylinder and piston supported by said levers and a valve controlled source of fluid supply for the operation of said cylinder and piston." s

6. In an apparatus of the class described, a pair of partible glass gathering elements, a glass severing device, a pair of rocking levers connected with said elements and. device, a cylind, and piston connected With' said levers and an equalizing means for causing saidcylinder and piston to 0 erate said levers at dilferent speeds and d1 erent distances of movement.

7. An ,pparatus of theclass described comprisin a glass furnace having a controllable discharge outlet. a chamber surrounding t he discharge end of the outlet and having a greater diameter than said outlet, :1 pair .of relatively movable gathering elements and a severing element movably positioned beneath the gathering elements and forming at'times with the wall of said chamber a closed extension, asevering margin on one of said gathering elements, means for moving the gathering elements toward and away from each other and means for independently moving the severing element in position to close the extension formed by the gathering elements and the wall of said chamber.

8. In an apparatus of the class described, the combination of a receptacle for molten glass having a controllable discharge out.- let, a no'n-partible chamber surrounding &

the discharge end of said outlet and. of greater diameter than said outlet, 21 pair of relatively movable gathering elements and a severing element forming at times 5 with the wall of said chamber a closed extension from the discharge outlet, a severing margin on one of said gathering elemer ts, means for moving the gathering elements, toward and away from each other 10 independently of the severing element and two subscribin means for moving the severing element in a position to close the lower end of said eX- tension.

In testimony whereof, I havesigned my name to this specification, in presence of 15 witnesses.

, AL *XANDER L. SCHRAM. Witnesses: E. L. WALLACE, R. G. EWING. 

